I suspect they need to be switched into the circuit, done with the logic when the amp is turned Off.
Sent from my iPhone ...nr4c. bill > On Feb 1, 2017, at 8:55 PM, <[email protected]> <[email protected]> wrote: > > If the fans are running on the capacitor charge when the amp is turned off, > wouldn't they still run if you pulled the plug? > > John KK9A > > > > Don Wilhelm wrote: > > John, > > Because after power off, the fans are powered by the charge in the > KPA500 capacitors discharging, I do not think that is a requirement - > but not a bad idea in any case. > > 73, > Don W3FPR > >> On 2/1/2017 7:53 PM, John Marvin wrote: >> I know this thread is supposed to be closed now, and hopefully this >> would be obvious, but you should also wait for the fans to stop before >> "pulling the plug". You should always turn the KPA500 off with the >> switch (or the KPA utility) first, wait for the fans to stop, then you >> can use the back switch or a power cord switch. > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]

